STEP 1: 生成備份並prepare

主庫做一個全備，做好看到 completed OK 表明備份成功

# innobackupex --defaults-file=/etc/my.cnf --user root --password XXX --no-timestamp /home/ssd/ali_backup/full_xtra_3306_20160825_1
...
160825 14:57:41 completed OK!

為了保證備份的資料一致性，需要prepare

# innobackupex --defaults-file=/etc/my.cnf --user root --password
 
 XXX --apply-log /home/ssd/ali_backup/full_xtra_3306_20160825_1
。。。
160825 15:15:04 completed OK!

STEP 2: 把備份傳到備機上

壓縮打包

# zip -r full_xtra_3306_20160825_1.zip full_xtra_3306_20160825_1/*

把備份從master傳到slave

# scp full_xtra_3306_20160825_1.zip db2:/home/oradata/ali_data_candicate

修改slave上datadir的許可權

# chown -R mysql:mysql ali_data_candicate
 

STEP 3:master節點上建立複製使用者

建立用於主從複製的使用者，並賦予合適的許可權

GRANT REPLICATION SLAVE ON *.* TO 'repl'@'db2' identified by 'XXX';

在slave上校驗建立的使用者

# mysql -hdb1 -urepl -pXXX
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id
 
 is 8
Server version: 5.6.31-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show grants;
+-------------------------------------------------------------------------------------------+
| Grants for [email protected]192.168.201.99                                                            |
+-------------------------------------------------------------------------------------------+
| GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.201.99' IDENTIFIED BY PASSWORD <secret> |
+-------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

STEP 4: slave節點配置

拷貝一份配置檔案到slave

# scp /etc/my.cnf db2:/etc/

在slave編輯配置檔案，修改相關路徑，注意server_id要與主節點不同

server_id=201993306

slave啟動mysql

STEP 5: 開啟複製

檢視xtrabackup_binlog_info確定複製開始position

# more xtrabackup_binlog_info
3306-mysql-bin.000002   191     87fd24be-683d-11e6-ba97-1418774c98d8:49-53

在slave節點執行CHANGE MASTER語句

CHANGE MASTER TO
MASTER_HOST = 'db1',
MASTER_PORT = 3306,
MASTER_USER = 'repl',
MASTER_PASSWORD = 'repl',
MASTER_AUTO_POSITION = 1;

跳過已經執行過的事務

mysql> set global gtid_purged='87fd24be-683d-11e6-ba97-1418774c98d8:49-53';
Query OK, 0 rows affected (0.00 sec)

開始複製

mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)

STEP 6: 檢查

mysql> show slave status\G;
。。。
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes